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arXiv · 0707.1923

Photon Antibunching in the Photoluminescence Spectra of a Single Carbon Nanotube

Alexander Högele·Christophe Galland·Martin Winger·Atac Imamoglu
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Abstract

We report the first observation of photon antibunching in the photoluminescence from single carbon nanotubes. The emergence of a fast luminescence decay component under strong optical excitation indicates that Auger processes are partially responsible for inhibiting two-photon generation. Additionally, the presence of exciton localization at low temperatures ensures that nanotubes emit photons predominantly one by one. The fact that multiphoton emission probability can be smaller than 5% suggests that carbon nanotubes could be used as a source of single photons for applications in quantum cryptography.

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Alexander Högele, Christophe Galland, Martin Winger, Atac Imamoglu. 2008-06-27. Photon Antibunching in the Photoluminescence Spectra of a Single Carbon Nanotube. https://doi.org/10.1103/physrevlett.100.217401

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